package cn.com.hesc.picture.multiplepic;

import android.content.Context;
import android.graphics.Bitmap;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * ProjectName: FastDev-master
 * ClassName: ViewHolder
 * Description: 重用视图类
 * Author: liujunlin
 * Date: 2016-09-20 10:15
 * Copyright: (C)HESC Co.,Ltd. 2016. All rights reserved.
 */

public class ViewHolder {
    private final SparseArray<View> mViews;
    private int mPosition;
    private View mConvertView;

    private ViewHolder(Context context, ViewGroup parent, int layoutId,
                       int position)
    {
        this.mPosition = position;
        this.mViews = new SparseArray<View>();
        mConvertView = LayoutInflater.from(context).inflate(layoutId, parent,
                false);
        // setTag
        mConvertView.setTag(this);
    }

    /**
     * 拿到一个ViewHolder对象
     *
     * context
     * convertView
     * parent
     * layoutId
     * position
     * @return ViewHolder
     */
    public static ViewHolder get(Context context, View convertView,
                                 ViewGroup parent, int layoutId, int position)
    {
        ViewHolder holder = null;
        if (convertView == null)
        {
            holder = new ViewHolder(context, parent, layoutId, position);
        } else
        {
            holder = (ViewHolder) convertView.getTag();
            holder.mPosition = position;
        }
        return holder;
    }

    public View getConvertView()
    {
        return mConvertView;
    }

    /**
     * 通过控件的Id获取对于的控件，如果没有则加入views
     * @param viewId 视图id
     * @return 返回绑定的视图
     */
    public <T extends View> T getView(int viewId)
    {
        View view = mViews.get(viewId);
        if (view == null)
        {
            view = mConvertView.findViewById(viewId);
            mViews.put(viewId, view);
        }
        return (T) view;
    }

    /**
     * 为TextView设置字符串
     *
     * @param viewId
     * @param text
     * @return
     */
    public ViewHolder setText(int viewId, String text)
    {
        TextView view = getView(viewId);
        view.setText(text);
        return this;
    }

    /**
     * 为ImageView设置图片
     *
     * @param viewId
     * @param drawableId
     * @return
     */
    public ViewHolder setImageResource(int viewId, int drawableId)
    {
        ImageView view = getView(viewId);
        view.setImageResource(drawableId);

        return this;
    }

    /**
     * 为ImageView设置图片
     *
     * @param viewId
     * @param bm
     * @return
     */
    public ViewHolder setImageBitmap(int viewId, Bitmap bm)
    {
        ImageView view = getView(viewId);
        view.setImageBitmap(bm);
        return this;
    }

    /**
     * 为ImageView设置图片
     *
     * @param viewId
     * @param url
     * @return
     */
    public ViewHolder setImageByUrl(int viewId, String url)
    {
        ImageLoader.getInstance(3, ImageLoader.Type.LIFO).loadImage(url, (ImageView) getView(viewId));
        return this;
    }

    public int getPosition()
    {
        return mPosition;
    }
}
